Head IG Radical Pro... Need string suggestions

Not sure if this belongs here or in the string section, but I need string suggestions for this stick. Right now I have it strung with Head FXP Tour, and it feels like mush. It came with my racquet, so that's why I put it in. I feel like this racquet needs a little bit of a stiffer string. I don't need anything that is super textured, as I already get enough spin from the open pattern. Any suggestions? Multis, polys and hybrids welcome. Thanks.

My two IG PMPs are both stock (Sonic Pro 17) at mid-tension. Like it but do feel it a bit in my shoulder. Was thinking to keep a copoly but go 2lbs or so lighter on tension? Don't mind a bit of extra pop, infact an extra foot or so my natural shot wouldn't go amiss. What do you think?